Here is the full list of all 17 Alien Shooter achievements.
Collect 1000000 scores in survive
Collect 500000 scores in survive
Collect 100000 scores in suvrive
Buy all weapons
Destroy 5000 crates
Collect 200000 money
Kill 10000 aliens
Destroy 1000 crates
Destroy 3000 barrels
Destroy 1000 barrels
Collect 60000 money
Buy all implants
Kill 1000 aliens
Collect 10000 money
Destroy 100 crates
Destroy 100 barrels
Kill 100 aliens